Composite gas detection device

Abstract

The utility model belongs to the field of gas detection devices, and particularly relates to a composite gas detection device which comprises a detector body, a gas leading-in pipe is arranged at the top of the detector body, the tail end of the gas leading-in pipe is fixedly connected with a first hollow shell, and the outer side of the first hollow shell is fixedly connected with a connecting frame. A first hollow shell is fixedly connected to one end of the connecting frame, a second hollow shell is fixedly connected to the other end of the connecting frame, a screen is fixedly connected to the inner side of the second hollow shell, a rotary knob is rotationally connected between the first hollow shell and the second hollow shell, and a fixing rod is fixedly connected to the inner side of the rotary knob. The first hollow shell, the second hollow shell, the screen mesh, the brush and other components are additionally arranged between the gas leading-in pipe and the collecting pipe, so that after gas is sucked in through the collecting pipe, large-particle impurities can be filtered out through the screen mesh, the gas leading-in pipe is prevented from being blocked, normal operation of other detection is guaranteed, and by rotating a rotary knob, the gas can be conveniently collected. And the brush can rub the surface of the screen, so that the screen is prevented from being blocked.

Description

Technical Field

[0001] The utility model belongs to the field of gas detection devices, and particularly relates to a composite gas detection device. Background Art

[0002] According to the invention application patent with the application publication number CN111983139A, a composite gas detection device proposed therein relates to the field of gas detection technology, including a detection body, a gas inlet pipe, and a collection head. A groove is axially formed on the outer wall of the collection head, and an anti-collision structure is correspondingly arranged at the groove. The anti-collision structure includes a limiting ring and an elastic guiding and sliding component. The limiting ring is adapted to the groove and is coaxially arranged with the collection head. The limiting ring is radially divided into a symmetrically arranged first limiting half-ring and a second limiting half-ring, and the first limiting half-ring and the second limiting half-ring are magnetically connected. Two elastic guiding and sliding components are correspondingly arranged for the first limiting half-ring and the second limiting half-ring. The elastic guiding and sliding component includes a guiding slider, and the guiding slider is elastically connected to the first limiting half-ring or the second limiting half-ring. The guiding slider approaches or moves away from the collection head along the radial direction of the limiting ring, and a rolling surface is formed on the side of the guiding slider facing away from the collection head.

[0003] For the existing composite gas detection device, when the collection pipe enters the pipeline for gas collection, impurities in the pipeline will enter the gas inlet pipe through the collection pipe, which is likely to cause blockage of the gas inlet pipe. Therefore, it needs to be improved. Summary of the Invention

[0004] The purpose of the utility model is to provide a composite gas detection device, which solves the problem that for the existing composite gas detection device, when the collection pipe enters the pipeline for gas collection, impurities in the pipeline will enter the gas inlet pipe through the collection pipe, which is likely to cause blockage of the gas inlet pipe.

[0005] To achieve the above purpose, the utility model provides a composite gas detection device, including a detector body. A gas inlet pipe is arranged at the top of the detector body. The end of the gas inlet pipe is fixedly connected with a first hollow shell. A connecting frame is fixedly connected to the outside of the first hollow shell, and the other end of the connecting frame is fixedly connected with a second hollow shell. A screen is fixedly connected to the inner side of the second hollow shell. A knob is rotatably connected between the first hollow shell and the second hollow shell. A fixing rod is fixedly connected to the inner side of the knob. The end of the fixing rod is fixedly connected with a central block. A rotating shaft is fixedly connected to the right side of the central block. The rotating shaft penetrates through the screen and is rotatably connected with the screen. A brush is fixedly connected to the end of the rotating shaft and contacts the screen. An installation block is slidably connected to the inner side of the second hollow shell. A collection pipe is fixedly connected to the inner side of the installation block. A positioning block is fixedly connected to the inner wall of the second hollow shell, and the positioning block is slidably connected with the installation block.

[0006] The principle of this utility model is as follows: When in use, first insert the collection tube into the pipeline, then the detector body works normally, and then suck other substances in the pipeline. Subsequently, other substances enter the second hollow shell through the collection tube and are filtered by the screen to remove larger particle impurities, thereby preventing the blockage of the gas inlet tube and ensuring the normal progress of gas detection. Then, the gas enters the detector body through the gas inlet tube for detection. At the same time, by rotating the knob, the knob drives the rotating shaft to rotate through the fixed rod and the central block, and the rotating shaft will cause the brush to scrape on the surface of the screen, thereby preventing the blockage of the screen. In the later stage, simply pull the collection tube, the latch is forced to retract into the mounting block, and then the collection tube can be removed, and then clean the sundries intercepted in the second hollow shell. The operation is simple and convenient.

[0007] The beneficial effects of this utility model are as follows: By adding components such as the first hollow shell, the second hollow shell, the screen, and the brush between the gas inlet tube and the collection tube, after the gas is sucked in through the collection tube, larger particle impurities will be filtered by the screen, thereby preventing the blockage of the gas inlet tube and ensuring the normal progress of other detections. Moreover, by rotating the knob, the brush will scrape on the surface of the screen, thereby preventing the blockage of the screen.

[0008] By providing a mounting block at the end of the collection tube, the mounting block can be inserted into the second hollow shell, and then positioned and fixed by a latch elastically supported by a spring inside the mounting block. In this way, in the later stage, simply pull the collection tube to remove it from the second hollow shell, and then clean the sundries intercepted at the screen. The operation is simple and convenient.

[0009] Further, the number of the connecting frames is three, and the three connecting frames are distributed in a circular array. Through the setting of the connecting frames, it is convenient for the connection between the first hollow shell and the second hollow shell.

[0010] Further, the number of the fixed rods is multiple, and the multiple fixed rods are distributed in a circular array. Through the setting of the fixed rods, it is convenient to fix the central block.

[0011] Further, a flow guide cover is fixedly connected to one side of the mounting block inside the second hollow shell, and the flow guide cover is funnel-shaped. Through the setting of the flow guide cover, it has a guiding effect on the air flow entering the second hollow shell from the collection tube.

[0012] Further, a sealing ring is embedded in the inner side of the positioning block, and the sealing ring contacts the mounting block. Through the setting of the sealing ring, it has a sealing effect after the mounting block is installed.

[0013] Further, a latch is slidably connected inside the mounting block, the latch is clamped with the positioning block, and a spring is arranged inside the mounting block. Through the setting of the latch, it has a positioning effect on the installation of the mounting block.

[0014] Further, one end of the spring is fixedly connected to the latch pin, and the other end of the spring is fixedly connected to the inner surface of the mounting block. By providing the spring, elastic force can act on the latch pin. Description of the Drawings

[0015] Figure 1 is a three-dimensional view of the overall structure of a composite gas detection device according to an embodiment of the present invention;

[0016] Figure 2 is a front cross-sectional view of a partial structure of a composite gas detection device according to an embodiment of the present invention Figure 1 ;

[0017] Figure 3 is an enlarged view of a partial structure of a composite gas detection device according to an embodiment of the present invention Figure 1 ;

[0018] Figure 4 is an enlarged view of part A of a composite gas detection device according to an embodiment of the present invention Figure 3 ;

[0019] Figure 5 is a three-dimensional view of the collection tube structure of a composite gas detection device according to an embodiment of the present invention Figure 4 ; Detailed Description of the Embodiment

[0020] The following is a further detailed description through specific embodiments:

[0021] The reference numerals in the accompanying drawings of the specification include: detector body 1, gas inlet pipe 2, first hollow shell 3, connecting frame 4, second hollow shell 5, screen 6, knob 7, fixed rod 8, central block 9, rotating shaft 10, brush 11, mounting block 12, collection tube 13, diversion cover 14, positioning block 15, sealing ring 16, latch pin 17, spring 18.

[0022] As Figure 1 , Figure 2 , Figure 3 shown, this embodiment provides a composite gas detection device, including a detector body 1. A gas inlet pipe 2 is provided at the top of the detector body 1. The end of the gas inlet pipe 2 is fixedly connected to a first hollow shell 3. A connecting frame 4 is fixedly connected to the outside of the first hollow shell 3. The other end of the connecting frame 4 is fixedly connected to a second hollow shell 5. The number of the connecting frames 4 is three, and the three connecting frames 4 are distributed in a circular array. By providing the connecting frame 4, it is convenient to connect the first hollow shell 3 and the second hollow shell 5.

[0023] As Figure 3 , Figure 4 , Figure 5As shown in the figure, a screen 6 is fixedly connected to the inner side of the hollow shell II 5. A knob 7 is rotatably connected between the hollow shell I 3 and the hollow shell II 5. A fixing rod 8 is fixedly connected to the inner side of the knob 7. The number of the fixing rods 8 is multiple, and the multiple fixing rods 8 are distributed in an annular array. Through the arrangement of the fixing rods 8, it is convenient to fix the central block 9. The end of the fixing rod 8 is fixedly connected to the central block 9. A rotating shaft 10 is fixedly connected to the right side of the central block 9. The rotating shaft 10 penetrates through the screen 6 and is rotatably connected to the screen 6. A brush 11 is fixedly connected to the end of the rotating shaft 10, and the brush 11 contacts the screen 6. An installation block 12 is slidably connected to the inner side of the hollow shell II 5. A collection pipe 13 is fixedly connected to the inner side of the installation block 12. A positioning block 15 is fixedly connected to the inner wall of the hollow shell II 5. The positioning block 15 is slidably connected to the installation block 12.

[0024] As Figure 4 , Figure 5 shown, a flow guide cover 14 is fixedly connected to one side of the installation block 12 located inside the hollow shell II 5, and the flow guide cover 14 is funnel-shaped. Through the arrangement of the flow guide cover 14, it has a guiding effect on the air flow entering the hollow shell II 5 from the collection pipe 13. A sealing ring 16 is embedded in the inner side of the positioning block 15, and the sealing ring 16 contacts the installation block 12. Through the arrangement of the sealing ring 16, it has a sealing effect after the installation block 12 is installed. A retaining pin 17 is slidably connected to the inside of the installation block 12. The retaining pin 17 is clamped with the positioning block 15. A spring 18 is arranged inside the installation block 12. Through the arrangement of the retaining pin 17, it has a positioning effect on the installation of the installation block 12. One end of the spring 18 is fixedly connected to the retaining pin 17, and the other end of the spring 18 is fixedly connected to the inner surface of the installation block 12. Through the arrangement of the spring 18, the elastic force can act on the retaining pin 17.

[0025] The specific implementation process of the present utility model is as follows: When in use, first insert the collection pipe 13 into the pipeline, then the detector body 1 works normally, then suck other substances in the pipeline, and then the other substances enter the hollow shell II 5 through the collection pipe 13, and then are filtered by the screen 6 to remove larger particle impurities, thereby preventing the blockage of the gas inlet pipe 2 and ensuring the normal progress of gas detection. Subsequently, the gas enters the detector body 1 through the gas inlet pipe 2 for detection. At the same time, by rotating the knob 7, the knob 7 drives the rotating shaft 10 to rotate through the fixing rod 8 and the central block 9, and the rotating shaft 10 will cause the brush 11 to scrape on the surface of the screen 6, thereby preventing the blockage of the screen 6. In the later stage, only by pulling the collection pipe 13, the retaining pin 17 is forced to retract into the installation block 12, and then the collection pipe 13 can be removed, and then the sundries intercepted in the hollow shell II 5 can be cleaned, and the operation is simple and convenient.

[0026] In this solution, components such as a hollow shell one 3, a hollow shell two 5, a screen 6, and a brush 11 are added between the gas inlet pipe 2 and the collection pipe 13. After the gas is drawn into the collection pipe 13, larger particle impurities will be filtered out by the screen 6, thus preventing the blockage of the gas inlet pipe 2 and ensuring the normal progress of other detections. Moreover, by rotating the knob 7, the brush 11 will scrape on the surface of the screen 6, further preventing the blockage of the screen 6.

[0027] By setting an installation block 12 at the end of the collection pipe 13, the installation block 12 can be inserted into the hollow shell two 5, and then positioned and fixed through a spring 18 in the installation block 12 and a spring pin 17 supported by the spring. In this way, in the later stage, only by pulling the collection pipe 13 can it be removed from the hollow shell two 5, and then the sundries intercepted at the screen 6 can be cleaned, and the operation is simple and convenient.

[0028] It should be noted in advance that in the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] The above are only the embodiments of the present invention, and common knowledge such as the specific structures and characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A composite gas detection device, comprising a detector body, characterized in that: A gas inlet pipe is provided at the top of the detector body. The end of the gas inlet pipe is fixedly connected to a first hollow shell. A connecting frame is fixedly connected to the outer side of the first hollow shell, and the other end of the connecting frame is fixedly connected to a second hollow shell. A sieve is fixedly connected to the inner side of the second hollow shell. A knob is rotatably connected between the first hollow shell and the second hollow shell. A fixing rod is fixedly connected to the inner side of the knob. A central block is fixedly connected to the end of the fixing rod. A rotating shaft is fixedly connected to the right side of the central block. The rotating shaft penetrates through the sieve and is rotatably connected to the sieve. A brush is fixedly connected to the end of the rotating shaft, and the brush contacts the sieve. An installation block is slidably connected to the inner side of the second hollow shell. A collection pipe is fixedly connected to the inner side of the installation block. A positioning block is fixedly connected to the inner wall of the second hollow shell. The positioning block is slidably connected to the installation block.

2. The composite gas detection device according to claim 1, wherein: The number of the connecting frames is three, and the three connecting frames are distributed in a circular array.

3. The composite gas detection device according to claim 1, characterized in that: The number of the fixing rods is multiple, and the multiple fixing rods are distributed in a circular array.

4. A composite gas detection device according to claim 1, characterized in that: A flow guide cover is fixedly connected to one side of the inner side of the second hollow shell where the installation block is located, and the flow guide cover is funnel-shaped.

5. The composite gas detection device according to claim 1, wherein: A sealing ring is embedded in the inner side of the positioning block, and the sealing ring contacts the installation block.

6. The composite gas detection device according to claim 1, characterized in that: A latch is slidably connected to the inside of the installation block. The latch is clamped with the positioning block. A spring is arranged inside the installation block.

7. The composite gas detection device according to claim 6, characterized in that: One end of the spring is fixedly connected to the latch, and the other end of the spring is fixedly connected to the inner surface of the installation block.

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